<template>
  <div class="roles">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级,三级-->
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      v-for="item3 in item2.children"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                      :key="item3.id"
                      type="warning"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{scope.row.children}}</pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button size="mini" type="danger" icon="el-icon-delete"
              >删除</el-button
            >
            <el-button
              @click="showSetRightDialog(scope.row)"
              size="mini"
              type="warning"
              icon="el-icon-setting"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <el-tree :data="rightslist" node-key="id" ref="treeRef" :default-checked-keys="defkeys" default-expand-all show-checkbox :props="treeProps"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      //所以角色列表数据
      roleList: [],
      //控制分配权限对话框的隐藏与显示
      setRightDialogVisible:false,
      //所有权限的数据
      rightslist:[],
      //树形控件的属性绑定对象
      treeProps:{
          label:'authName',
          children:'children'
      },
      //默认选中的节点Id值数组
      defkeys:[],
      //当前即将分配权限的id
      id:""
    };
  },
  created() {
    this.getRoleList();
  },
  methods: {
    //获取所有角色的列表
    getRoleList() {
      this.axios.get("roles").then((res) => {
        if (res.data.meta.status !== 200) {
          return this.$message.error("获取角色列表失败");
        }
        // console.log(res);
        this.roleList = res.data.data;
      });
    },
    // 根据id删除对应的权限
    async removeRightById(role, rightId) {
      //弹框提示是否删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("取消删除");
      }
      this.axios.delete(`roles/${role.id}/rights/${rightId}`).then((res) => {
        if (res.data.meta.status !== 200) {
          return this.$message.error("删除权限失败");
        }
        //   console.log(res.data.data)
        role.children = res.data.data;
      });
    },
    //打开分配权限对话框
    showSetRightDialog(role) {
        //获取所有权限的数据
        this.axios.get('rights/tree').then(res=>{
            // console.log(res.data);
            if(res.data.meta.status!==200){
                return this.$message.error('获取数据失败')
            }
            //获取到权限数据保存data中
            this.rightslist=res.data.data
        })
        //递归获取三级节点的id
        this.getLeafKeys(role,this.defkeys);
        this.id=role.id
        this.setRightDialogVisible=true
    },
    //通过递归的形式，获取角色下所有三级权限id，并保存到defkeys数组中
    getLeafKeys(node,arr){
     
      //如果当前节点不包含children属性则是三级属性
      if(!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item,arr))
    },
    //监听分配权限对话框的关闭事件
    setRightDialogClosed(){
      this.defkeys=[]
    },
    //点击为角色分配权限
    allotRights(){
      const keys=[...this.$refs.treeRef.getCheckedKeys(),
      ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      // console.log(keys);
      const idStr=keys.join(',');
      this.axios.post(`roles/${this.id}/rights`,{rids:idStr}).then(res=>{
        console.log(res.data);
        if(res.data.meta.status!==200){
          this.$message.error('分配权限失败');
        }
        this.getRoleList();
        this.$message.success('分配权限成功');
        this.setRightDialogVisible=false;
        
      })
    }
  },
};
</script>
<style>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.roles .el-row {
  display: flex;
  align-items: center;
}
</style>